Directions: I-15 Exit #47; take US 30 E; zero your odometer at the Chevron station; mi 0.5 turn L (N) on Old US 91; mi 3.9 turn R (E) at Portneuf WMA sign (Robbers Roost Rd); continue to the gate at mile 4.1; a high clearance vehicle is needed beyond the gate; if you proceed, there are turnouts at mi 4.2 and 4.5.

Description: Sharp-tailed Grouse can be found on "benches", and watch for Red-tailed Hawks. Look for Green-tailed Towhees nesting in sagebrush habitat. The riparian habitat is likely to have nesting Yellow Warblers. MacGillivray’s and Wilson’s Warblers can be seen during migration. Watch this area for accipiters. Golden Eagles, Northern Harriers, Red-tailed Hawks and Great-horned Owls are commonly seen on Portneuf WMA. Swainson’s and Rough-legged Hawks are early spring visitors, passing through on their migration flights north. Blue, Ruffed and breeding Columbia Sharp-tailed Grouse are commonly found on the WMA. Turkey, Gray Partridge and Ring-necked Pheasants are less common resident upland bird species.
Yellow Warbler, Yellow-rumped Warbler, MacGillivray’s Warbler, Vesper Sparrow, Song Sparrow, Savannah Sparrow, American Goldfinch, Lazuli Bunting, Western Dingbird, Western Wood Pewee, Black-capped chickadee, Sage Thrasher, Rufous-sided Towhee, Green-tailed Towhee, American Robin, Ruby-crowned Kinglet, Western Meadowlark, and Pine Siskin are some of the birds that inhabit Portneuf WMA’s riparian and upland habitat.